Propeller-wheel.



No. 896,087. PATENTED AUG. 18, 1908.

G. B. DAVIS.

IPROPELLER WHEEL.

APPLICATION FILED AUG. 5, 1967.

Val

" UNITED STATES PATENT oEErcE.

GEORGE B. DAVIS, OF DAWSON, YUKON TERRITORY, CANADA.

PROPELLER-W'HIEEL.

Specification of Letters Patent.

Patented Aug. 18, 1908.

Application filed. August 5, 1907. Serial No- 387,207.

To all whom it may concern:

-Be it known that I, GEORGEB. DAVIS, a citizen of the United States,residing at Dawson, Territory of Yukon, Canada, have invented certainnew and useful Improvements in Propeller-Wheels, and hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention has relation to new and useful improvements in propellerwheels, especially designed for marine propulsion and has for its objectthe production of a simple and economical construction of wheel of thischaracter having means whereby the paddles may be adjusted to work atthe proper depth in the water, the invention relating more particularlyto a form or construction of paddle whereby back pressure is eliminatedand the maximum amount of power obtained.

With the foregoing and other objects in view, the invention consists ofcertain novel features of construction, combination and arrangement ofparts, as will be more fully described and particularly pointed out inthe appended claims.

In the accompanying drawings,Fi ure 1 is a side elevation of a propellerwhee constructed in accordance with the invention; Fig. 2 is a centralcross sectional view of the same and Fig. 3 is a detail perspective viewof one of the paddles. As shown in the drawings, and in accordance withthe invention, the side members or wheels 1 of the propeller are eachprovided with a plurality of radially projecting arms or spokes 2,slotted longitudinally, near their outer or free ends, as at 3, the sidemembers or wheels being connected by a shaft or axle 4.

Journal rods 5 are arranged between and adjustably secured in theslotted ends of the arms or spokes 2 of the side members or wheels 1.These rods are provided with suitable heads 6 at one end adapted toengage the outer faces of the arms or spokes of one of the side membersand are threaded at their opposite ends to receive nuts 7 adapted toengage the outer faces of the arms or spokes of the other side member.The paddle proper adjustment of the ournal rods in the arms or spokes 2.

By providing'a paddle of the construction shown and described and havingit free for rotation relatively to the pro eller wheel,

back pressure incident to the orms of propeller wheels now employed, isobviated, and the full or maximum power of the wheel obtained.

- From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having described my invention, what I claim as new and desire to secureby Letters- Patent, is

In a propeller wheel, the combination with side members having radiallyprojecting longitudinally slotted arms or spokes, of ournal rodsarranged transversely of said side members and adjustable in the slotsof the arms or spokes thereof, said rods having heads at one end forengaging the arms or spokes of one of the side members and threaded attheir opposite ends to receive nuts for engaging the arms or spokes ofthe other side member, whereby said rods may be retained in an adjustedosition, and paddles, each comprising a p urality of radially projectinlades rotatably mounted on the j ourna rods so as to be adapted forrotation relatively to the pro eller wheel.

In testimony w ereof I have hereunto set my hand in presence of twosubscribing witnesses.

GEORGE B. DAVIS. Witnesses:

ROBERT B. Bone, JosEPH J. MANIER.

